GENERAL
CONVERSION FORMULAE
|
|
From
|
To
|
Multiply by
|
|
inches
|
|
millimetres
|
25.4
|
|
millimetres
|
|
inches
|
0.0394
|
|
inches
|
|
centimetres
|
2.54
|
|
centimetres
|
|
inches
|
0.3937
|
|
feet
|
|
metres
|
0.3048
|
|
metres
|
|
feet
|
3.281
|
|
yards
|
|
metres
|
0.9144
|
|
metres
|
|
yards
|
1.094
|
|
miles
|
|
kilometres
|
1.609
|
|
kilometres
|
|
miles
|
0.6214
|
|
sq inches
|
|
sq centimetres
|
6.452
|
|
sq centimetres
|
|
sq inches
|
0.155
|
|
sq metres
|
|
sq feet
|
10.76
|
|
sq feet
|
|
sq metres
|
0.0929
|
|
sq yards
|
|
sq metres
|
0.8361
|
|
sq metres
|
|
sq yards
|
1.196
|
|
sq miles
|
|
sq kilometres
|
2.589
|
|
sq kilometres
|
|
sq miles
|
0.3861
|
|
acres
|
|
hectares
|
0.4047
|
|
hectares
|
|
acres
|
2.471
|
|
cu inches
|
|
cu centimetres
|
16.39
|
|
cu centimetres
|
|
cu inches
|
0.06102
|
|
cu feet
|
|
cu metres
|
0.02832
|
|
cu metres
|
|
cu feet
|
35.315
|
|
cu yards
|
|
cu metres
|
0.7646
|
|
cu metres
|
|
cu yards
|
1.308
|
|
cu inches
|
|
litres
|
0.01639
|
|
litres
|
|
cu inches
|
61.03
|
|
pints
|
|
litres
|
0.5682
|
|
litres
|
|
pints
|
1.76
|
|
US pints
|
|
litres
|
0.47311
|
|
litres
|
|
US pints
|
2.114
|
|
US
gallon
|
|
liters
|
3.785
|
|
gallons
|
|
litres
|
4.546
|
|
litres
|
|
US gallons
|
0.2642
|
|
litres
|
|
gallons
|
0.22
|
|
grains
|
|
grams
|
0.0648
|
|
grams
|
|
grains
|
15.43
|
|
ounces
|
|
grams
|
28.35
|
|
grams
|
|
ounces
|
0.03527
|
|
pounds
|
|
grams
|
453.6
|
|
grams
|
|
pounds
|
0.002205
|
|
pounds
|
|
kilograms
|
0.4536
|
|
kilograms
|
|
pounds
|
2.205
|
|
tons
|
|
kilograms
|
1016.05
|
|
kilograms
|
|
tons
|
0.0009842
|
|
Back to the top of the
page
|
|
LINEAR MEASURE
|
|
From
|
To
|
Multiply by
|
|
inches
|
|
millimetres
|
25.4
|
|
millimetres
|
|
inches
|
0.0394
|
|
inches
|
|
centimetres
|
2.54
|
|
centimetres
|
|
inches
|
0.3937
|
|
feet
|
|
metres
|
0.3048
|
|
metres
|
|
feet
|
3.281
|
|
yards
|
|
metres
|
0.9144
|
|
metres
|
|
yards
|
1.094
|
|
miles
|
|
kilometres
|
1.609
|
|
kilometres
|
|
miles
|
0.6214
|
|
nautical
miles
|
|
kilometres
|
1.852
|
|
nautical
miles
|
|
miles
|
1.150779
|
|
Back to the top of the
page
|
1
centimetre = 10 mm
1 decimetre = 10 cm
1 metre = 100 cm
1 kilometre = 1,000 m
1
foot = 12 inches
1 yard = 3 feet
1 (statute) mile= 1,760 yards
1 int. nautical mile= 1.150779 miles
|
AREA
|
|
From
|
To
|
Multiply by
|
|
sq
inches
|
|
sq
millimetres
|
645.16
|
|
sq
millimetres
|
|
sq
inches
|
0.001550
|
|
sq
inches
|
|
sq
centimetres
|
6.452
|
|
sq
centimetres
|
|
sq
inches
|
0.155
|
|
sq feet
|
|
sq
centimetres
|
929.03
|
|
sq
centimetres
|
|
sq feet
|
0.001076
|
|
sq
metres
|
|
sq feet
|
10.76
|
|
sq feet
|
|
sq
metres
|
0.0929
|
|
sq yards
|
|
sq
metres
|
0.8361
|
|
sq
metres
|
|
sq yards
|
1.196
|
|
sq miles
|
|
sq
kilometres
|
2.5899
|
|
sq miles
|
|
hectares
|
0.25899
|
|
hectares
|
|
sq miles
|
3.8612
|
|
sq
kilometres
|
|
sq miles
|
0.3861
|
|
acres
|
|
sq
metres
|
4046.86
|
|
sq
metres
|
|
acres
|
0.000247
|
|
acres
|
|
hectares
|
0.4047
|
|
hectares
|
|
acres
|
2.471
|
|
Back to the top of the
page
|
1
square foot = 144 sq. in.
1 square yard = 9 sq. ft
1 acre = 4,840 sq. yd
1 square mile = 640 acres
1 square metre = 10,000 sq. cm
1 are = 119.6 sq. yards
1 are = 100 square metres
1 hectare = 100 ares = 2.471 acres
1 square kilometre = 100 hectares
|
VOLUME
|
|
From
|
To
|
Multiply by
|
|
cu
inches
|
|
cu
centimetres
|
16.39
|
|
cu
centimetres
|
|
cu
inches
|
0.06102
|
|
cu
inches:
|
|
cu
decimetres
|
16.387
|
|
cu feet
|
|
cu
metres
|
0.02832
|
|
cu
metres
|
|
cu feet
|
35.315
|
|
cu feet
|
|
cu
inches
|
1,728
|
|
cu feet
|
|
cu
decimetres
|
28.316
|
|
cu yards
|
|
cu
metres
|
0.7646
|
|
cu
metres
|
|
cu yards
|
1.308
|
|
cu
inches
|
|
litres
|
0.01639
|
|
litres
|
|
cu
inches
|
61.03
|
1 cubic metre = 1,000,000 cu. cm
|
CAPACITY
|
|
From
|
To
|
Multiply by
|
|
fluid
ounce
|
|
litres
|
0.0284
|
|
fluid
ounce
|
|
cu
inches
|
1.8047
|
|
US
fluid ounce
|
|
litres
|
0.0296
|
|
US
fluid ounce
|
|
cu
inches
|
1.878
|
|
gills
|
|
litres
|
0.1421
|
|
pint
|
|
cu
inches
|
34.68
|
|
pints
|
|
litres
|
0.568
|
|
litres
|
|
pints
|
1.7606
|
|
US
pints
|
|
liters
|
0.4731
|
|
liters
|
|
US pints
|
2.114
|
|
US pints
|
|
cu
inches
|
28.88
|
|
cu
inches
|
|
US pints
|
0.0347
|
|
quarts
|
|
litres
|
1.136
|
|
US
quarts
|
|
liters
|
0.9463
|
|
gallons
|
|
litres
|
4.546
|
|
US
gallons
|
|
litres
|
3.785
|
|
peck
|
|
litres
|
9.092
|
|
bushel
|
|
liters
|
36.4
|
|
US
barrels
|
|
cubic
metres
|
0.159
|
|
Back to the top of the
page
|
1 US
pint = 16 fluid oz
1 gill = 5 fluid oz
1 pint = 20 fluid oz
1 quart = 2 pints
1 gallon = 4 quarts
1 peck = 2 gallons
1 bushel = 4 pecks
1 centilitre = 10 ml = 0.018 pint
1 decilitre = 10 cl = 0.176 pint
1 litre = 1000 ml = 1.76 pints
1 litre = 1 cubic decimetres
1 decalitre = 10 l = 2.20 gallons
1 hectolitre = 100 l = 2.75 bushels
1 kilolitre = 1,000 l = 3.44 quarters
The decalitre is sometimes spelled dekalitre
MASS and WEIGHT - Commonly used values
|
|
From
|
To
|
Multiply by
|
|
grams
|
|
grains
|
15.43
|
|
grains
|
|
grams
|
0.0648
|
|
ounces
|
|
grams
|
28.349
|
|
grams
|
|
ounces
|
0.03527
|
|
pounds
|
|
grams
|
453.59
|
|
grams
|
|
pounds
|
0.002205
|
|
pounds
|
|
kilograms
|
0.45359
|
|
kilograms
|
|
pounds
|
2.205
|
|
tons
|
|
kilograms
|
1016.05
|
|
kilograms
|
|
tons
|
0.0009842
|
|
tons
|
|
tonnes
|
1.016
|
|
tonnes
|
|
tons
|
0.9842
|
|
Back to the top of the
page
|
stones: kilograms = 6.350
quarters: kilograms = 12.700
centals: kilograms = 45.359
hundredweights: kilograms = 50.802
1 milligram = 0.015 grain
1 centigram = 10 mg = 0.154 grain
1 decigram = 100 mg = 1.543 grains
1 gram = 1000 mg = 15.43 grains
1 decagram = 10 g = 5.64 drams
1 hectogram = 100 g = 3.527 ounces
1 kilogram = 1,000 g = 2.205 pounds
1 tonne (metric ton) = 0.9842 (long) ton= 1,000 kg
The decagram is sometimes spelled dekagram
|
|
|
From
|
To
|
Multiply by
|
|
kilonewtons
|
|
pounds
(f)
|
224.8
|
|
pounds
(f)
|
|
kilonewtons
|
0.004448
|
|
kilonewtons
|
|
tons
(f)
|
0.10036
|
|
tons
(f)
|
|
kilonewtons
|
9.96401
|
|
kilonewtons
|
|
kilograms
(f)
|
102.0
|
|
kilograms
(f)
|
|
kilonewtons
|
0.009807
|
|
Back to the top of the
page
|
|
|
|
From
|
To
|
Multiply by
|
|
miles/gallon
|
|
kilometres/litre
|
0.3539
|
|
kilometres/litre
|
|
miles/gallon
|
2.825
|
|
miles/US
gallon
|
|
kilometers/liter
|
0.4250
|
|
kilometers/liter
|
|
miles/US
gallon
|
2.353
|
|
gallons/mile
|
|
litres/
kilometre
|
2.825
|
|
litres/
kilometre
|
|
gallons/mile
|
0.3540
|
|
Back
to the top of the page
|
American
Dry Measurements
|
|
From
|
To
|
Multiply by
|
|
pint
|
|
cu. in.
|
33.60
|
|
pint
|
|
liter
|
0.550
|
|
quart
|
|
liters
|
1.101
|
|
peck (8
quarts)
|
|
liters
|
8.81
|
|
bushel
(4 pecks)
|
|
liters
|
35.3
|
|
Back to the top of the
page
|
American to
Imperial Capacity measurements
|
|
From
|
To
|
Multiply by
|
|
US
fluid ounce
|
|
fluid
ounce
|
1.0408
|
|
fluid
ounce
|
|
US
fluid ounce
|
0.9608
|
|
US
pint
|
|
pint
|
0.8327
|
|
pint
|
|
US
pint
|
1.201
|
|
US
gallon
|
|
gallon
|
0.8327
|
|
gallon
|
|
US
gallon
|
1.201
|
|
Back to the top of the
page
|
Velocity
|
|
From
|
To
|
Multiply by
|
|
miles/hour
|
|
kilometres/hour
|
1.609
|
|
kilometres/
hour
|
|
miles/hour
|
0.6117
|
|
feet/second
|
|
metres/second
|
0.305
|
|
metres/second
|
|
feet/second
|
3.279
|
|
feet/minute
|
|
metres/second
|
0.00508
|
|
metres/
second
|
|
feet/minute
|
196.74
|
|
feet/minute
|
|
metres/minute
|
0.305
|
|
Back to the top of the
page
|
|
|
|
From
|
To
|
Multiply by
|
|
pounds/in2
|
|
kilonewtons/m2
|
6.895
|
|
pounds/in2
|
|
Atmosphere
|
0.0680
|
|
pounds/in2
|
|
Kilograms/m2
|
9.80665
|
|
Pascal
|
|
pounds/in2
|
14.696
|
|
Pascal
|
|
feet/second
|
3.279
|
|
Pascal
|
|
Kilograms/m2
|
703.07
|
|
Kilograms/m2
|
|
pounds/in2
|
0.001422
|
|
Kilograms/m2
|
|
Atmosphere
|
9.68X10-5
|
|
Kilograms/m2
|
|
Pascal
|
9.8067
|
|
Atmosphere
|
|
pounds/in2
|
14.696
|
|
Atmosphere
|
|
Pascal
|
101,325
|
|
Atmosphere
|
|
Kilograms/m2
|
10,332
|
|
newton/m2
|
|
pascal
|
1.000
|
|
kilopascal
|
|
kilonewton/m2
|
1.000
|
|
Back to the top of the
page
|
|
|
|
From
|
To
|
Multiply by
|
|
Newton
Metres
|
|
Foot
Pound
|
0.7376
|
|
Newton
Metres
|
|
Kilogram
Force Metres
|
0.1020
|
|
Foot
Pounds
|
|
Newton
Metres
|
1.356
|
|
Foot
Pounds
|
|
Kilogram
Force Metres
|
0.1383
|
|
Kilogram
Force Metres
|
|
Foot
Pound
|
7.233
|
|
Kilogram
Force Metres
|
|
Newton
Metres
|
9.807
|
|
Inch
Pound
|
|
Foot
Pound
|
12
|
|
Back to the top of the
page
|
Temperature
Conversion
|
|
F to
C first
deduct 32, Multiply by 5 then Divide by 9
|
|
C to
F
Multiply by 9, Divide by 5, Add 32
|
Expanded Body Temperature Range
Avoirdupois
Weight is the system of weights used in most
English Speaking countries.
1
dram= 1.772 grams
1 ounce = 16 drams
1 pound = 16 ounces= 7,000 grains
1 stone = 14 pounds
1 hundredweight = 112 pounds (US 100 pounds)
1 short ton= 0.907 tonne = 2,000 pounds
1 (long) ton = 20 hundredweight = 2,240 pounds
Troy Weight (Precious Metals)
24 grains = 1 pennyweight
20 pennyweights = 480 grains = 1 ounce
12 ounces = 5760 = grains = 1 pound
Apothecaries' Weight
20 grains = 1 scruple
3 scruples = 1 dram
8 drams = 1 ounce
12 ounces = 5760 grains = 1 pound
Archaic and less frequently used linear measure
3 hands = 1 foot
1 span 9 inches
1 rod, pole or perch = 16.5 feet
40 poles = 1 furlong
8 furlongs = 1 mile
320 rods = 1 mile
3 miles = 1 league
Nautical
miles and Knots
10 cables = 1 nautical mile
6080 feet = 1 nautical mile
1 Knot = 1.151 mph
The nautical mile is defined as the
average distance on the earth's surface
corresponding to an angle of 1 minute of arc. A speed of one nautical
miles
per hour is known as the knot. The International Nautical mile is
accepted
by the Royal Navy (1970) as being equal to 1852 metres. As the earth
is
not a perfect sphere, but is an oblate spheroid, the distance
corresponding
to one minute of arc will vary depending on location. The value of 6080
feet
is a compromise and is the value as measured at some point in the English
channel.
Depth
6 feet = 1 fathom
15 fathom = 1 shackle
Power
Horsepower - 745.7 Watts (SI) or 735.5
Watts (Continental Europe)